/brz/remove-bazaar

# (C) 2005, 2006 Canonical Ltd

# This program is free software; you can redistribute it and/or modify

# it under the terms of the GNU General Public License as published by

# the Free Software Foundation; either version 2 of the License, or

# (at your option) any later version.

# This program is distributed in the hope that it will be useful,

# but WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

# GNU General Public License for more details.

# You should have received a copy of the GNU General Public License

# along with this program; if not, write to the Free Software

# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

"""Tests for InterRepository implementastions."""

import sys

import bzrlib

import bzrlib.bzrdir as bzrdir

from bzrlib.branch import Branch, needs_read_lock, needs_write_lock

import bzrlib.errors as errors

from bzrlib.errors import (FileExists,

                           NoSuchRevision,

                           NoSuchFile,

                           UninitializableFormat,

                           NotBranchError,

                           )

import bzrlib.repository as repository

from bzrlib.revision import NULL_REVISION, Revision

from bzrlib.tests import TestCase, TestCaseWithTransport, TestSkipped

from bzrlib.tests.bzrdir_implementations.test_bzrdir import TestCaseWithBzrDir

from bzrlib.transport import get_transport

class TestCaseWithInterRepository(TestCaseWithBzrDir):

    def setUp(self):

        super(TestCaseWithInterRepository, self).setUp()

    def make_branch(self, relpath, format=None):

        repo = self.make_repository(relpath, format=format)

        return repo.bzrdir.create_branch()

    def make_bzrdir(self, relpath, format=None):

        try:

            url = self.get_url(relpath)

            segments = url.split('/')

            if segments and segments[-1] not in ('', '.'):

                parent = '/'.join(segments[:-1])

                t = get_transport(parent)

                try:

                    t.mkdir(segments[-1])

                except FileExists:

                    pass

            if format is None:

                format = self.repository_format._matchingbzrdir

            return format.initialize(url)

        except UninitializableFormat:

            raise TestSkipped("Format %s is not initializable." % format)

    def make_repository(self, relpath, format=None):

        made_control = self.make_bzrdir(relpath, format=format)

        return self.repository_format.initialize(made_control)

    def make_to_repository(self, relpath):

        made_control = self.make_bzrdir(relpath,

            self.repository_format_to._matchingbzrdir)

        return self.repository_format_to.initialize(made_control)

def check_old_format_lock_error(repository_format):

    """Potentially ignore LockError on old formats.

    On win32, with the old OS locks, we get a failure of double-lock when

    we open a object in 2 objects and try to lock both.

    On new formats, LockError would be invalid, but for old formats

    this was not supported on Win32.

    """

    if sys.platform != 'win32':

        raise

    description = repository_format.get_format_description()

    if description in ("Repository format 4",

                       "Weave repository format 5",

                       "Weave repository format 6"):

        # jam 20060701

        # win32 OS locks are not re-entrant. So one process cannot

        # open the same repository twice and lock them both.

        raise TestSkipped('%s on win32 cannot open the same'

                          ' repository twice in different objects'

                          % description)

    raise

class TestInterRepository(TestCaseWithInterRepository):

    def test_interrepository_get_returns_correct_optimiser(self):

        # we assume the optimising code paths are triggered

        # by the type of the repo not the transport - at this point.

        # we may need to update this test if this changes.

        source_repo = self.make_repository("source")

        target_repo = self.make_to_repository("target")

        interrepo = repository.InterRepository.get(source_repo, target_repo)

        self.assertEqual(self.interrepo_class, interrepo.__class__)

    def test_fetch(self):

        tree_a = self.make_branch_and_tree('a')

        self.build_tree(['a/foo'])

        tree_a.add('foo', 'file1')

        tree_a.commit('rev1', rev_id='rev1')

        def check_push_rev1(repo):

            # ensure the revision is missing.

            self.assertRaises(NoSuchRevision, repo.get_revision, 'rev1')

            # fetch with a limit of NULL_REVISION and an explicit progress bar.

            repo.fetch(tree_a.branch.repository,

                       revision_id=NULL_REVISION,

                       pb=bzrlib.progress.DummyProgress())

            # nothing should have been pushed

            self.assertFalse(repo.has_revision('rev1'))

            # fetch with a default limit (grab everything)

            repo.fetch(tree_a.branch.repository)

            # check that b now has all the data from a's first commit.

            rev = repo.get_revision('rev1')

            tree = repo.revision_tree('rev1')

            tree.get_file_text('file1')

            for file_id in tree:

                if tree.inventory[file_id].kind == "file":

                    tree.get_file(file_id).read()

        # makes a target version repo 

        repo_b = self.make_to_repository('b')

        check_push_rev1(repo_b)

    def test_fetch_missing_revision_same_location_fails(self):

        repo_a = self.make_repository('.')

        repo_b = repository.Repository.open('.')

        try:

            self.assertRaises(errors.NoSuchRevision, repo_b.fetch, repo_a, revision_id='XXX')

        except errors.LockError, e:

            check_old_format_lock_error(self.repository_format)

    def test_fetch_same_location_trivial_works(self):

        repo_a = self.make_repository('.')

        repo_b = repository.Repository.open('.')

        try:

            repo_a.fetch(repo_b)

        except errors.LockError, e:

            check_old_format_lock_error(self.repository_format)

    def test_fetch_missing_text_other_location_fails(self):

        source_tree = self.make_branch_and_tree('source')

        source = source_tree.branch.repository

        target = self.make_to_repository('target')

        # start by adding a file so the data for hte file exists.

        self.build_tree(['source/id'])

        source_tree.add(['id'], ['id'])

        source_tree.commit('a', rev_id='a')

        # now we manually insert a revision with an inventory referencing

        # 'id' at revision 'b', but we do not insert revision b.

        # this should ensure that the new versions of files are being checked

        # for during pull operations

        inv = source.get_inventory('a')

        inv['id'].revision = 'b'

        inv.revision_id = 'b'

        sha1 = source.add_inventory('b', inv, ['a'])

        rev = Revision(timestamp=0,

                       timezone=None,

                       committer="Foo Bar <foo@example.com>",

                       message="Message",

                       inventory_sha1=sha1,

                       revision_id='b')

        rev.parent_ids = ['a']

        source.add_revision('b', rev)

        self.assertRaises(errors.RevisionNotPresent, target.fetch, source)

        self.assertFalse(target.has_revision('b'))

class TestCaseWithComplexRepository(TestCaseWithInterRepository):

    def setUp(self):

        super(TestCaseWithComplexRepository, self).setUp()

        tree_a = self.make_branch_and_tree('a')

        self.bzrdir = tree_a.branch.bzrdir

        # add a corrupt inventory 'orphan'

        inv_file = tree_a.branch.repository.control_weaves.get_weave(

            'inventory', 

            tree_a.branch.repository.get_transaction())

        inv_file.add_lines('orphan', [], [])

        # add a real revision 'rev1'

        tree_a.commit('rev1', rev_id='rev1', allow_pointless=True)

        # add a real revision 'rev2' based on rev1

        tree_a.commit('rev2', rev_id='rev2', allow_pointless=True)

        # and sign 'rev2'

        tree_a.branch.repository.sign_revision('rev2',

            bzrlib.gpg.LoopbackGPGStrategy(None))

    def test_missing_revision_ids(self):

        # revision ids in repository A but not B are returned, fake ones

        # are stripped. (fake meaning no revision object, but an inventory 

        # as some formats keyed off inventory data in the past.

        # make a repository to compare against that claims to have rev1

        repo_b = self.make_to_repository('rev1_only')

        repo_a = self.bzrdir.open_repository()

        repo_b.fetch(repo_a, 'rev1')

        # check the test will be valid

        self.assertFalse(repo_b.has_revision('rev2'))

        self.assertEqual(['rev2'],

                         repo_b.missing_revision_ids(repo_a))

    def test_missing_revision_ids_revision_limited(self):

        # revision ids in repository A that are not referenced by the

        # requested revision are not returned.

        # make a repository to compare against that is empty

        repo_b = self.make_to_repository('empty')

        repo_a = self.bzrdir.open_repository()

        self.assertEqual(['rev1'],

                         repo_b.missing_revision_ids(repo_a, revision_id='rev1'))

    def test_fetch_preserves_signatures(self):

        from_repo = self.bzrdir.open_repository()

        from_signature = from_repo.get_signature_text('rev2')

        to_repo = self.make_to_repository('target')

        to_repo.fetch(from_repo)

        to_signature = to_repo.get_signature_text('rev2')

        self.assertEqual(from_signature, to_signature)

class TestCaseWithGhosts(TestCaseWithInterRepository):

    def setUp(self):

        super(TestCaseWithGhosts, self).setUp()

        # we want two repositories at this point

        # one with a revision that is a ghost in the other

        # repository.

        # 'ghost' is a ghost in missing_ghost and not in with_ghost_rev

        inv = bzrlib.tree.EmptyTree().inventory

        repo = self.make_repository('with_ghost_rev')

        sha1 = repo.add_inventory('ghost', inv, [])

        rev = bzrlib.revision.Revision(timestamp=0,

                                       timezone=None,

                                       committer="Foo Bar <foo@example.com>",

                                       message="Message",

                                       inventory_sha1=sha1,

                                       revision_id='ghost')

        rev.parent_ids = []

        repo.add_revision('ghost', rev)

        repo = self.make_to_repository('missing_ghost')

        sha1 = repo.add_inventory('with_ghost', inv, [])

        rev = bzrlib.revision.Revision(timestamp=0,

                                       timezone=None,

                                       committer="Foo Bar <foo@example.com>",

                                       message="Message",

                                       inventory_sha1=sha1,

                                       revision_id='with_ghost')

        rev.parent_ids = ['ghost']

        repo.add_revision('with_ghost', rev)

    def test_fetch_all_fixes_up_ghost(self):

        # fetching from a repo with a current ghost unghosts it in referencing

        # revisions.

        repo = repository.Repository.open('missing_ghost')

        rev = repo.get_revision('with_ghost')

        from_repo = repository.Repository.open('with_ghost_rev')

        repo.fetch(from_repo)

        # rev must not be corrupt now

        rev = repo.get_revision('with_ghost')

        self.assertEqual([None, 'ghost', 'with_ghost'], repo.get_ancestry('with_ghost'))